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1.
BJU Int ; 131(3): 321-329, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-36084065

RESUMO

AIM: To evaluate the efficacy and safety of intravesical electrical stimulation (IVES) performed with a novel device in patients with underactive bladder (UAB). PATIENTS AND METHODS: This was a multicentre, prospective, single-blind, randomized controlled clinical trial of patients with UAB in China. Eligible patients were randomly assigned in a 1:1 ratio to receive conventional IVES (n = 38) or IVES with an open circuit (n = 38). The primary efficacy measure was change from baseline in post-void residual urine volume (PVR) after 4 weeks of treatment. Secondary efficacy measures included changes in maximum urinary flow rate (Qmax ), bladder voiding efficiency (BVE), number of 24-h clean intermittent catheterization (CIC) procedures, and Patient Perception of Bladder Condition-Scale (PPBC-S) and American Urological Association Symptom Index Quality of Life (AUA-SI-QoL) scores from baseline after 4 weeks of treatment. Adverse events (AEs) were monitored throughout the trial. RESULTS: In the full analysis set (FAS), the mean (sd) PVR changes in the trial and control groups at 4 weeks were -97.1 (107.5) mL and -10.5 (86.7) mL, respectively (P < 0.01). Similar results were obtained in the per-protocol set (PPS): -102.9 (100.0) mL vs 0.7 (82.5) mL (P < 0.01). In the FAS and PPS, Qmax improved significantly at 4 weeks (P = 0.04 and P = 0.03). In the FAS and PPS, BVE was significantly improved at 4 weeks in the two groups (P < 0.01 and P < 0.01), whereas no significant differences in the number of 24-h CIC procedures, PPBC-S score or AUA-SI-QoL score were observed between the groups. Six possible therapy-related AEs occurred in six patients (four in the trial group and two in the control group; P = 0.67), all of which were urinary tract infections. No severe AEs were reported. CONCLUSIONS: The results of this clinical study strongly demonstrate that UAB patients benefit from this novel IVES device. More research is needed to validate the clinical utility of this device.


Assuntos
Doenças da Bexiga Urinária , Bexiga Inativa , Humanos , Qualidade de Vida , Estudos Prospectivos , Método Simples-Cego , Resultado do Tratamento , Estimulação Elétrica
2.
J Environ Manage ; 341: 118071, 2023 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-37148762

RESUMO

Applying exogenous additives during the aerobic composting of livestock manure is effective for slowing down the spread of antibiotic resistance genes (ARGs) in the environment. Nanomaterials have received much attention because only low amounts need to be added and they have a high capacity for adsorbing pollutants. Intracellular ARGs (i-ARGs) and extracellular ARGs (e-ARGs) comprise the resistome in livestock manure but the effects of nanomaterials on the fates of these different fractions during composting are still unclear. Thus, we investigated the effects of adding SiO2 nanoparticles (SiO2NPs) at four levels (0 (CK), 0.5 (L), 1 (M), and 2 g/kg (H)) on i-ARGs, e-ARGs, and the bacterial community during composting. The results showed that i-ARGs represented the main fraction of ARGs during aerobic composting of swine manure, and their abundance was lowest under M. Compared with CK, M increased the removal rates of i-ARGs and e-ARGs by 17.9% and 100%, respectively. SiO2NPs enhanced the competition between ARGs hosts and non-hosts. M optimized the bacterial community by reducing the abundances of co-hosts (Clostridium_sensu_stricto_1, Terrisporobacter, and Turicibacter) of i-ARGs and e-ARGs (by 96.0% and 99.3%, respectively) and killing 49.9% of antibiotic-resistant bacteria. Horizontal gene transfer dominated by mobile genetic elements (MGEs) played a key role in the changes in the abundances of ARGs. i-intI1 and e-Tn916/1545 were key MGEs related closely to ARGs, and the maximum decreases of 52.8% and 100%, respectively, occurred under M, which mainly explained the decreased abundances of i-ARGs and e-ARGs. Our findings provide new insights into the distribution and main drivers of i-ARGs and e-ARGs, as well as demonstrating the possibility of adding 1 g/kg SiO2NPs to reduce the propagation of ARGs.


Assuntos
Compostagem , Nanopartículas , Animais , Suínos , Genes Bacterianos , Dióxido de Silício , Antibacterianos/farmacologia , Esterco/microbiologia , Bactérias/genética , Resistência Microbiana a Medicamentos/genética , Gado , Sequências Repetitivas Dispersas
3.
Zhonghua Nan Ke Xue ; 29(6): 511-517, 2023 Jun.
Artigo em Chinês | MEDLINE | ID: mdl-38602723

RESUMO

OBJECTIVE: To explore the mediating effect of coping style between illness perception and fear of cancer recurrence in patients undergoing radical prostatectomy. METHODS: A questionnaire survey was carried out in 254 eligible patients who underwent radical prostatectomy in the urology department of two comprehensive tertiary hospitals in Wenzhou City from June 2022 to December 2022. The questionnaires include the general data questionnaire, brief illness perception questionnaire (BIPQ), Medical Coping Modes Questionnaire (MCMQ) and Fear of Progression Questionnaire-Short Form (FoP-Q-SF). A structural equation model was used to analyze the mediating effect of coping style between illness perception and fear of cancer recurrence. RESULTS: The score of fear of cancer recurrence in prostate cancer patients is (30.08 ± 10.11). Illness perception, avoidance, and surrender coping styles could forward prediction fear of cancer recurrence (P=0.001, P=0.019, P=0.001); facing coping styles can negatively predict fear of cancer recurrence (P=0.001). Coping style played a part of the mediating role between illness perception and fear of cancer recurrence, and the mediating effect is 0.150,which accounted for 47.62% of the total effect. CONCLUSION: Coping style is a mediator between illness perception and fear of cancer recurrence in patients undergoing radical prostatectomy. Doctors and nurses should reduce patients' negative perception, guide them to adopt positive coping strategies, and thereby reduce their fear of cancer recurrence.


Assuntos
Prostatectomia , Neoplasias da Próstata , Masculino , Humanos , Neoplasias da Próstata/cirurgia , Capacidades de Enfrentamento , Medo , Percepção
4.
Zhongguo Yi Liao Qi Xie Za Zhi ; 47(6): 664-668, 2023 Nov 30.
Artigo em Chinês | MEDLINE | ID: mdl-38086725

RESUMO

As the special subject of the applicant for registration of medical device, the research and development institutions have insufficient conditions and abilities to become medical device registrants, and there are certain difficulties in the actual registration application process, such as not clearing the certification path for the research and development institutions to hold the certificate. In view of the existing problems, by comparing the path of medicine research and development institutions to become medical device registrants and combining with the actual medical device industry to give relevant suggestions, including improving quality management over the whole life cycle of medical devices, quality and safety responsibility ability of research and development institutions, establishing the registration and certification path of research and development institutions, supporting laws and regulations, etc., so as to ensure that the research and development institutions become medical device registrants successfully.


Assuntos
Certificação , Pesquisa
5.
BMC Surg ; 21(1): 43, 2021 Jan 19.
Artigo em Inglês | MEDLINE | ID: mdl-33468126

RESUMO

BACKGROUND: The prolapse of a ruptured and extruded bladder after vaginal hysterectomy is rare in clinical practice. We report the case of a significant mass that prolapsed from the vagina after a vaginal hysterectomy in a multiparous postmenopausal woman. CASE PRESENTATION: A 67-year old multiparous postmenopausal Chinese woman was found to have a significant mass extruding from the vagina after a vaginal hysterectomy. The mass was a ruptured and everted bladder, and the diagnosis was confirmed after physical and imaging examinations and urethral catheterization. The patient underwent an emergency operation for mass reduction, bladder repair, and partial colpocleisis under general anesthesia. She recovered without prolapse or urinary drainage complications after 35 months of follow-up. CONCLUSIONS: The present case serves as a guide for the management of patients with pelvic organ prolapse. The condition of patients should be carefully evaluated before surgery, and individualized operation should be performed. Careful postoperative follow-up is crucial for the timely exclusion of complications, especially in elderly patients with persistently increased abdominal pressure.


Assuntos
Cistostomia , Histerectomia Vaginal/efeitos adversos , Prolapso de Órgão Pélvico/cirurgia , Bexiga Urinária/cirurgia , Incontinência Urinária/etiologia , Idoso , Feminino , Humanos , Pós-Menopausa , Resultado do Tratamento , Bexiga Urinária/diagnóstico por imagem , Cateterismo Urinário , Procedimentos Cirúrgicos Urológicos , Vagina/cirurgia
6.
Zhongguo Yi Liao Qi Xie Za Zhi ; 43(3): 192-196, 2019 May 30.
Artigo em Chinês | MEDLINE | ID: mdl-31184077

RESUMO

In order to strengthen the integration of reform system and build a comprehensive integration of openness and innovation, the medical device registrar system has become the institutional choice to promote the reform of the medical approval system and the innovation and development of the industry. The system allows scientific researchers, R&D institutions and enterprises to become applicants for medical device registration and to consign the production of samples and products, thus realizing the separation of market license and production license, and breaking the binding relationship between registration and production in current regulations. The medical device registrar system has laid a theoretical foundation for remolding the management system of medical devices, and has also made practical exploration for improving the reform of the medical devices supervision system, so it has important theoretical and practical significance.


Assuntos
Aprovação de Equipamentos , Indústrias , Sistema de Registros , Licenciamento
7.
Am J Physiol Renal Physiol ; 315(6): F1555-F1564, 2018 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-30132345

RESUMO

The pudendal nerve can be injured during vaginal delivery of children, and slowed pudendal nerve regeneration has been correlated with development of stress urinary incontinence (SUI). Simultaneous injury to the pudendal nerve and its target muscle, the external urethral sphincter (EUS), during delivery likely leads to slowed neuroregeneration. The goal of this study was to determine if repeat electrical stimulation of the pudendal nerve improves SUI recovery and promotes neuroregeneration in a dual muscle and nerve injury rat model of SUI. Rats received electrical stimulation or sham stimulation of the pudendal nerve twice weekly for up to 2 wk after injury. A separate cohort of rats received sham injury and sham stimulation. Expression of brain-derived neurotrophic factor (BDNF) and ßII-tubulin expression in Onuf's nucleus were measured 2, 7, and 14 days after injury. Urodynamics, leak point pressure (LPP), and EUS electromyography (EMG) were recorded 14 days after injury. Electrical stimulation significantly increased expression of BDNF at all time points and ßII-tubulin 1 and 2 wk after injury. Two weeks after injury, LPP and EUS EMG during voiding and LPP testing were significantly decreased compared with sham-injured animals. Electrical stimulation significantly increased EUS activity during voiding, although LPP did not fully recover. Repeat pudendal nerve stimulation promotes neuromuscular continence mechanism recovery possibly via a neuroregenerative response through BDNF upregulation in the pudendal motoneurons in this model of SUI. Electrical stimulation of the pudendal nerve may therefore improve recovery after childbirth and ameliorate symptoms of SUI by promoting neuroregeneration after injury.


Assuntos
Terapia por Estimulação Elétrica/métodos , Regeneração Nervosa , Traumatismos dos Nervos Periféricos/terapia , Nervo Pudendo/fisiopatologia , Bexiga Urinária/inervação , Incontinência Urinária por Estresse/terapia , Urodinâmica , Animais , Fator Neurotrófico Derivado do Encéfalo/metabolismo , Modelos Animais de Doenças , Feminino , Traumatismos dos Nervos Periféricos/metabolismo , Traumatismos dos Nervos Periféricos/fisiopatologia , Nervo Pudendo/lesões , Nervo Pudendo/metabolismo , Ratos Sprague-Dawley , Recuperação de Função Fisiológica , Tubulina (Proteína)/metabolismo , Bexiga Urinária/metabolismo , Incontinência Urinária por Estresse/metabolismo , Incontinência Urinária por Estresse/fisiopatologia
8.
Zhonghua Nan Ke Xue ; 24(1): 72-77, 2018.
Artigo em Chinês | MEDLINE | ID: mdl-30157365

RESUMO

OBJECTIVE: To observe the clinical effect and safety of the Chinese patent medicine Ningmitai Capsules (NMT) in relieving lower urinary tract symptoms (LUTS) in the patient with benign prostatic hyperplasia (BPH). METHODS: We randomly assigned 40 BPH patients to an experimental and a control group of equal number to receive oral administration of NMT at 4 capsules tid and terazosin hydrochloride tablets at 2 mg qd, respectively, both for 14 days. At 7 and 14 days after medication, we recorded and compared the International Prostate Symptoms Score (IPSS), maximum urinary flow rate (Qmax), quality of life (QoL) scores, results of urinalysis and blood routine examination, and indexes of hepatic and renal function. RESULTS: Both NMT and terazosin significantly improved the total IPSS score, the IPSS scores in the storage and voiding phases, increased Qmax and urine output, reduced post-void residual urine (PVR), and improved the QoL of the patients. The patients of the NMT group showed a better relief of incomplete bladder emptying, more improved QoL and fewer adverse reactions, while those treated with terazosin achieved a better attenuation of weak urine stream and PVR. CONCLUSIONS: NMT is safe and effective in relieving LUTS in BPH patients. Each of NMT and terazosin has its own advantages in attenuating urinary tract irritation and obstruction, but whether their combination may produce a better effect on LUTS and the specific mechanisms of NMT improving acute symptoms of BPH are yet to be further studied.


Assuntos
Medicamentos de Ervas Chinesas/uso terapêutico , Sintomas do Trato Urinário Inferior/tratamento farmacológico , Prazosina/análogos & derivados , Hiperplasia Prostática/complicações , Agentes Urológicos/uso terapêutico , Administração Oral , Cápsulas , Quimioterapia Combinada , Humanos , Sintomas do Trato Urinário Inferior/etiologia , Masculino , Prazosina/uso terapêutico , Qualidade de Vida , Retenção Urinária/tratamento farmacológico , Micção
9.
Ann Clin Microbiol Antimicrob ; 16(1): 45, 2017 Jun 24.
Artigo em Inglês | MEDLINE | ID: mdl-28646898

RESUMO

BACKGROUND: The purpose of this study was to evaluate the prevalence of Chlamydia trachomatis, Neisseria gonorrhoeae, Mycoplasma genitalium and Ureaplasma urealyticum infections in infertile men that consulted our outpatient departments using a novel simultaneous amplification testing (SAT) that is RNA-detection based. The possible impact of C. trachomatis, N. gonorrhoeae, M. genitalium and U. urealyticum infections on semen parameters was also noted in the present study. METHODS: A total of 2607 males that were diagnosed with infertility were included in this study. C. trachomatis, N. gonorrhoeae, M. genitalium and U. urealyticum infections were detected in the urine samples using SAT method. Related data, including semen parameters and age as well as C. trachomatis, N. gonorrhoeae, M. genitalium and U. urealyticum infections were collected and analyzed. RESULTS: A total of 51 and 1418 urine samples were found positive for M. genitalium RNA and U. urealyticum RNA, respectively, while the prevalence of C. trachomatis and N. gonorrhoeae was relatively lower. Men with positive M. genitalium RNA and U. urealyticum RNA had higher sperm DNA fragmentation index (DFI) while the comparisons of other semen parameters yielded nonsignificant results between the RNA positive and negative group. A multivariate linear regression analysis revealed that U. urealyticum and M. genitalium infections posed significant factors of DFI (adjusted R2 = 46.2%). CONCLUSIONS: Our study suggested a relative high prevalence of U. urealyticum and M. genitalium infection based on this novel SAT detection method. U. urealyticum and M. genitalium infection could possibly impair male fertility potential through promoting sperm DNA damage.


Assuntos
Chlamydia trachomatis/isolamento & purificação , Infertilidade Masculina/microbiologia , Mycoplasma genitalium/isolamento & purificação , Neisseria gonorrhoeae/isolamento & purificação , Técnicas de Amplificação de Ácido Nucleico/métodos , Ureaplasma urealyticum/isolamento & purificação , Adulto , China/epidemiologia , Chlamydia trachomatis/genética , Humanos , Infertilidade Masculina/epidemiologia , Masculino , Mycoplasma genitalium/genética , Neisseria gonorrhoeae/genética , Prevalência , RNA Bacteriano/genética , Ureaplasma urealyticum/genética , Urina/microbiologia , Adulto Jovem
10.
Med Sci Monit ; 23: 2292-2298, 2017 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-28505148

RESUMO

BACKGROUND Stroke risk and stroke recurrence are increased in cancer patients, but the pathogenesis and biomarkers of kidney cancer-related stroke (KCS) are generally unclear. The aim of the present research was to investigate the pathogenesis and plasma biomarkers of kidney cancer-related stroke. MATERIAL AND METHODS A retrospective review was conducted on acute stroke patients with kidney cancer (KC) who were admitted to the hospital between January 2006 and December 2015. A total of 106 patients with KCS (active KC patients with acute stroke but without conventional vascular risks) were identified. In addition, 106 age- and sex-matched patients with KC alone were recruited. RESULTS KCS patients had higher plasma D-dimer, cancer antigen (CA) 125, and CEA levels and greater proteinuria levels than did KC patients. Multiple logistic regression analysis showed that the risk of stroke in patients with KC increased independently by 0.8% (odds ratio [OR] 1.008; 95% confidence interval [CI] 1.002, 1.013; p=0.004) with a 1 ng/mL increase in D-dimer levels, by 1.2% (OR 1.012; 95% CI 1.007, 1.018; p=0.000) with a 1 U/mL increase in CA125, by 2.5% (OR 1.025; 95% CI 1.012, 1.038; p=0.000) with a 1 U/mL increase in CEA by 1.4% (OR 1.014; 95% CI 1.005, 1.024; p=0.004) with a 1 mg increase in urine protein in 24 hours. CONCLUSIONS Elevated plasma D-dimer, CA125 and CEA levels, and increased urine protein levels might lead to hypercoagulability and then KCS; however, they may also be biomarkers of KCS.


Assuntos
Acidente Vascular Cerebral/metabolismo , Acidente Vascular Cerebral/patologia , Idoso , Biomarcadores/sangue , Biomarcadores Tumorais/sangue , Biomarcadores Tumorais/genética , Antígeno Ca-125/sangue , Infarto Cerebral/complicações , Feminino , Produtos de Degradação da Fibrina e do Fibrinogênio , Humanos , Neoplasias Renais/complicações , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Fatores de Risco , Acidente Vascular Cerebral/sangue
11.
Respir Res ; 17(1): 103, 2016 08 22.
Artigo em Inglês | MEDLINE | ID: mdl-27549302

RESUMO

BACKGROUND: Pirfenidone was recently approved for treatment of idiopathic pulmonary fibrosis. However, the therapeutic dose of pirfenidone is very high, causing side effects that limit its doses and therapeutic effectiveness. Understanding the molecular mechanisms of action of pirfenidone could improve its safety and efficacy. Because activated fibroblasts are critical effector cells associated with the progression of fibrosis, this study investigated the genes that change expression rapidly in response to pirfenidone treatment of pulmonary fibroblasts and explored their contributions to the anti-fibrotic effects of pirfenidone. METHODS: We used the GeneChip microarray to screen for genes that were rapidly up-regulated upon exposure of human lung fibroblast cells to pirfenidone, with confirmation for specific genes by real-time PCR and western blots. Biochemical and functional analyses were used to establish their anti-fibrotic effects in cellular and animal models of pulmonary fibrosis. RESULTS: We identified Regulator of G-protein Signaling 2 (RGS2) as an early pirfenidone-induced gene. Treatment with pirfenidone significantly increased RGS2 mRNA and protein expression in both a human fetal lung fibroblast cell line and primary pulmonary fibroblasts isolated from patients without or with idiopathic pulmonary fibrosis. Pirfenidone treatment or direct overexpression of recombinant RGS2 in human lung fibroblasts inhibited the profibrotic effects of thrombin, whereas loss of RGS2 exacerbated bleomycin-induced pulmonary fibrosis and mortality in mice. Pirfenidone treatment reduced bleomycin-induced pulmonary fibrosis in wild-type but not RGS2 knockout mice. CONCLUSIONS: Endogenous RGS2 exhibits anti-fibrotic functions. Upregulated RGS2 contributes significantly to the anti-fibrotic effects of pirfenidone.


Assuntos
Fibroblastos/efeitos dos fármacos , Fibrose Pulmonar Idiopática/tratamento farmacológico , Pulmão/efeitos dos fármacos , Piridonas/farmacologia , Proteínas RGS/metabolismo , Animais , Bleomicina , Sinalização do Cálcio/efeitos dos fármacos , Linhagem Celular , Proliferação de Células/efeitos dos fármacos , Modelos Animais de Doenças , Relação Dose-Resposta a Droga , Fibroblastos/metabolismo , Fibroblastos/patologia , Perfilação da Expressão Gênica/métodos , Humanos , Fibrose Pulmonar Idiopática/genética , Fibrose Pulmonar Idiopática/metabolismo , Fibrose Pulmonar Idiopática/patologia , Pulmão/metabolismo , Pulmão/patologia , Camundongos Endogâmicos C57BL , Camundongos Knockout , Análise de Sequência com Séries de Oligonucleotídeos , Proteínas RGS/deficiência , Proteínas RGS/genética , RNA Mensageiro/genética , RNA Mensageiro/metabolismo , Trombina/farmacologia , Fatores de Tempo , Transfecção , Regulação para Cima
12.
Neurourol Urodyn ; 35(6): 703-10, 2016 08.
Artigo em Inglês | MEDLINE | ID: mdl-26088829

RESUMO

AIMS: Histamine and serotonin-related pharmaceuticals have the potential to modulate micturition and continence. The aim of this study was to determine if treatment with histamine and/or serotonin improves stress urinary incontinence (SUI) in female rats. METHODS: Twenty-six age-matched female rats underwent pudendal nerve crush and vaginal distension (PNC + VD), to produce SUI. One week after injury, rats were treated subcutaneously with saline, histamine (1.1 µg), serotonin (2µg), or the combination of both twice daily for another week. A sham injured group received sham PNC + VD and were treated with saline (n = 7). Leak point pressure (LPP) testing with simultaneous external urethral sphincter (EUS) electromyography (EMG) was conducted 2 weeks after injury. The urethra was harvested for qualitative and quantitative histology. Data were analyzed with a one-way ANOVA and Student-Newman-Keuls posthoc test with P < 0.05 indicating statistically significant differences between groups. RESULTS: Combination treatment significantly increased LPP after PNC + VD compared to injured sham treatment and treatment with either histamine or serotonin alone. Compared to injured sham treated rats, all three treatments significantly increased EUS EMG amplitude at both baseline and peak pressure and EUS EMG firing rate at peak pressure during LPP testing. There were more consistent urethral striated muscle fibers and thicker smooth and striated muscle with combination and histamine treatment. There was a statistically significant shift to a greater proportion of thicker collagen fibers in the urethra in serotonin and combination treated rats compared with injured sham treated rats. CONCLUSIONS: Combination treatment was the most effective and may provide an effective therapy for SUI. Neurourol. Urodynam. 35:703-710, 2016. © 2015 Wiley Periodicals, Inc.


Assuntos
Traumatismos do Nascimento/tratamento farmacológico , Histamina/uso terapêutico , Compressão Nervosa/efeitos adversos , Nervo Pudendo/lesões , Serotonina/uso terapêutico , Incontinência Urinária por Estresse/tratamento farmacológico , Animais , Traumatismos do Nascimento/etiologia , Modelos Animais de Doenças , Eletromiografia , Feminino , Histamina/farmacologia , Ratos , Ratos Sprague-Dawley , Serotonina/farmacologia , Resultado do Tratamento , Uretra/efeitos dos fármacos , Incontinência Urinária por Estresse/etiologia
13.
Am J Respir Cell Mol Biol ; 53(1): 42-9, 2015 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-25368964

RESUMO

G protein-coupled receptors (GPCRs) are important regulators of cell functions in asthma. We recently reported that regulator of G-protein signaling (RGS) 2, a selective modulator of Gq-coupled GPCRs, is a key regulator of airway hyper-responsiveness (AHR), the pathophysiologic hallmark of asthma. Because RGS2 protein levels in airway cells were significantly lower in patients with asthma compared with patients without asthma, we further investigated the potential pathological importance of RGS2 repression in asthma. The human RGS2 gene maps to chromosome 1q31. We first screened patients with asthma for RGS2 gene promoter single-nucleotide polymorphisms (SNPs) and found significant differences in the distribution of two RGS2 SNPs (A638G, rs2746071 and C395G, rs2746072) between patients with asthma and nonasthmatic subjects. These two SNPs are always associated with each other and have the same higher prevalence in patients with asthma (65%) as compared with nonasthmatic subjects (35%). Point mutations corresponding to these SNPs decrease RGS2 promoter activity by 44%. The importance of RGS2 down-regulation was then determined in an acute IL-13 mouse model of asthma. Intranasal administration of IL-13 in mice also decreased RGS2 expression in lungs by ∼50% and caused AHR. Although naive RGS2 knockout (KO) mice exhibit spontaneous AHR, acute IL-13 exposure further increased AHR in RGS2 KO mice. Loss of RGS2 also significantly enhanced IL-13-induced mouse airway remodeling, including peribronchial smooth muscle thickening and fibrosis, without effects on goblet cell hyperplasia or airway inflammation in mice. Thus, genetic variations and increased inflammatory cytokines can lead to RGS2 repression, which exacerbates AHR and airway remodeling in asthma.


Assuntos
Asma/genética , Asma/metabolismo , Polimorfismo de Nucleotídeo Único , Regiões Promotoras Genéticas , Proteínas RGS , Remodelação das Vias Aéreas , Animais , Asma/induzido quimicamente , Asma/patologia , Cromossomos Humanos Par 1/genética , Cromossomos Humanos Par 1/metabolismo , Modelos Animais de Doenças , Feminino , Humanos , Interleucina-13/toxicidade , Masculino , Camundongos , Camundongos Knockout , Músculo Liso/metabolismo , Músculo Liso/patologia , Proteínas RGS/genética , Proteínas RGS/metabolismo
14.
Neurourol Urodyn ; 34(4): 381-6, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-24501018

RESUMO

AIMS: Pudendal nerve and external urethral sphincter (EUS) injury during vaginal delivery are risk factors for stress urinary incontinence (SUI). Although most patients with short-term postpartum SUI regain continence within 1 year, they have a higher predisposition to develop recurrent SUI years later, suggesting a possible mechanistic relationship. In contrast, animal models generally recover spontaneously and have not been studied much in the long term. The aim of this study was to investigate the long-term effects of simulated childbirth injury in rats. METHODS: Thirty-four Sprague-Dawley female rats underwent sham injury or pudendal nerve crush and vaginal distension (PNC + VD), a simulated childbirth injury. Nine weeks later, leak point pressure (LPP) and EUS electromyography (EMG) were recorded simultaneously. The pudendal nerve was harvested for histological analysis. EUS neuromuscular junctions (NMJs) and their innervation were qualitatively assessed using immunofluorescence. A t-test was used to compare quantitative outcomes between groups, with P < 0.05 indicating a significant difference. RESULTS: There was no significant difference in LPP or EUS EMG amplitude or firing rate between the two groups. Nonetheless after PNC + VD, NMJs in the EUS were diffuse and were innervated by tortuous and multiple axons, demonstrating that reinnervation of the EUS was still in progress. CONCLUSIONS: Although continence function recovered 9 weeks after simulated childbirth injury, innervation of EUS was not complete at this time point, suggestive of persistent neurogenic deficiency which when compounded by the effects of aging may lead to a delayed recurrence of SUI in this animal model with increased age.


Assuntos
Compressão Nervosa , Junção Neuromuscular/fisiopatologia , Parto , Traumatismos dos Nervos Periféricos/fisiopatologia , Nervo Pudendo/cirurgia , Uretra/inervação , Incontinência Urinária por Estresse/fisiopatologia , Vagina/cirurgia , Potenciais de Ação , Animais , Dilatação , Modelos Animais de Doenças , Eletromiografia , Feminino , Regeneração Nervosa , Traumatismos dos Nervos Periféricos/etiologia , Gravidez , Pressão , Nervo Pudendo/patologia , Nervo Pudendo/fisiopatologia , Ratos Sprague-Dawley , Recuperação de Função Fisiológica , Fatores de Tempo , Incontinência Urinária por Estresse/etiologia , Vagina/inervação , Vagina/fisiopatologia
16.
Zhongguo Yi Liao Qi Xie Za Zhi ; 39(6): 445-8, 2015 Nov.
Artigo em Chinês | MEDLINE | ID: mdl-27066688

RESUMO

The license management of medical devices is an important part of production supervision, but there are some contradictions and confusion in the relevant legislation. The right way of resolve the plight is to distinguish correctly license application on the medical devices production for the first time, license change and license continuity, and then make the appropriate regulatory requirements.


Assuntos
Equipamentos Médicos Duráveis , Licenciamento/legislação & jurisprudência , China
17.
J Neurosci ; 33(26): 10591-606, 2013 Jun 26.
Artigo em Inglês | MEDLINE | ID: mdl-23804083

RESUMO

A life-threatening disability after complete spinal cord injury is urinary dysfunction, which is attributable to lack of regeneration of supraspinal pathways that control the bladder. Although numerous strategies have been proposed that can promote the regrowth of severed axons in the adult CNS, at present, the approaches by which this can be accomplished after complete cord transection are quite limited. In the present study, we modified a classic peripheral nerve grafting technique with the use of chondroitinase to facilitate the regeneration of axons across and beyond an extensive thoracic spinal cord transection lesion in adult rats. The novel combination treatment allows for remarkably lengthy regeneration of certain subtypes of brainstem and propriospinal axons across the injury site and is followed by markedly improved urinary function. Our studies provide evidence that an enhanced nerve grafting strategy represents a potential regenerative treatment after severe spinal cord injury.


Assuntos
Regeneração Nervosa/fisiologia , Traumatismos da Medula Espinal/fisiopatologia , Bexiga Urinária/fisiologia , Animais , Axônios/fisiologia , Condroitina ABC Liase/farmacologia , Eletromiografia , Feminino , Fator 1 de Crescimento de Fibroblastos/farmacologia , Imuno-Histoquímica , Metisergida/farmacologia , Fibras Nervosas/fisiologia , Nervos Periféricos/transplante , Ratos , Ratos Sprague-Dawley , Recuperação de Função Fisiológica , Serotonina/fisiologia , Antagonistas da Serotonina/farmacologia , Tirosina 3-Mono-Oxigenase/metabolismo , Bexiga Urinária/inervação , Micção/efeitos dos fármacos , Urodinâmica/fisiologia , alfa-Metiltirosina/farmacologia
18.
Oncol Lett ; 27(2): 87, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38249807

RESUMO

Immune checkpoint inhibitors (ICIs) are commonly utilized in tumor treatment. However, they still have limitations, including insufficient effectiveness and unavoidable adverse events. It has been demonstrated that gut microbiota can influence the effectiveness of ICIs, although the precise mechanism remains unclear. Gut microbiota plays a crucial role in the formation and development of the immune system. Gut microbiota and their associated metabolites play a regulatory role in immune balance. Tumor occurrence and development are linked to their ability to evade recognition and destruction by the immune system. The purpose of ICIs treatment is to reinitiate the immune system's elimination of tumor cells. Thus, the immune system acts as a communication bridge between gut microbiota and ICIs. Varied composition and characteristics of gut microbiota result in diverse outcomes in ICIs treatment. Certain gut microbiota-related metabolites also influence the therapeutic efficacy of ICIs to some extent. The administration of antibiotics before or during ICIs treatment can diminish treatment effectiveness. The utilization of probiotics and fecal transplantation can partially alter the outcome of ICIs treatment. The present review synthesized previous studies to examine the association between gut microbiota and ICIs, elucidated the role of gut microbiota and its associated factors in ICIs treatment, and offered direction for future research.

19.
Bioresour Technol ; 401: 130758, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38692374

RESUMO

Triclosan (TCS) and tetracycline (TC) are commonly detected antibacterial agents in sewage and environment matrices. Nonetheless, the impact of sequential exposure to TCS and TC on the methanogenic digestion microbiome remains unknown. In this study, TCS was shown to reduce COD removal efficiency to 69.8%, but alleviated the inhibitive effect of consequent TC-amendment on the digestion microbiome. Interestingly, TCS pre-exposure resulted in abundance increase of acetotrophic Methanosaeta to 2.68%, being 2.91 folds higher than that without TCS amendment. Microbial network analyses showed that TCS pre-exposure caused microorganisms to establish a co-ecological relationship against TC disturbance. Further analyses of total antibiotic resistance genes (ARGs) showed the TCS-derived compromise of TC-induced ARGs enrichment in digestion microbiomes, e.g., 238.2% and 152.1% ARGs increase upon TC addition in digestion microbiomes without and with TCS pre-exposure, respectively. This study provides new insights into the impact of antibacterial agents on the methanogenic digestion microbiome.


Assuntos
Metano , Microbiota , Tetraciclina , Triclosan , Triclosan/farmacologia , Microbiota/efeitos dos fármacos , Tetraciclina/farmacologia , Metano/metabolismo , Resistência Microbiana a Medicamentos/genética , Esgotos/microbiologia , Antibacterianos/farmacologia
20.
Evol Appl ; 17(6): e13708, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38863828

RESUMO

Age is a significant contributing factor to the occurrence and progression of cardiovascular disease (CVD). Pharmacological treatment can effectively alleviate CVD symptoms caused by aging. However, 90% of the drugs have failed in clinics because of the loss of drug effects or the occurrence of the side effects. One of the reasons is the disparity between animal models used and the actual physiological levels in humans. Therefore, we integrated multiple datasets from single-cell and bulk-seq RNA-sequencing data in rats, monkeys, and humans to identify genes and pathways with consistent/differential expression patterns across these three species. An approach called "Cross-species signaling pathway analysis" was developed to select suitable animal models for drug screening. The effectiveness of this method was validated through the analysis of the pharmacological predictions of four known anti-vascular aging drugs used in animal/clinical experiments. The effectiveness of drugs was consistently observed between the models and clinics when they targeted pathways with the same trend in our analysis. However, drugs might have exhibited adverse effects if they targeted pathways with opposite trends between the models and the clinics. Additionally, through our approach, we discovered four targets for anti-vascular aging drugs, which were consistent with their pharmaceutical effects in literatures, showing the value of this approach. In the end, software was established to facilitate the use of "Cross-species signaling pathway analysis." In sum, our study suggests utilizing bioinformatics analysis based on disease characteristics can help in choosing more appropriate animal models.

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